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Field and laboratory studies of crops; an elementary manual for students of agriculture
School of agriculture and experiment station. Address during Farmers' week, January 4, 1909
Plant protection and quarantine : safeguarding American agriculture, fighting invasive species, and facilitating trade
The new earth; a recital of the triumphs of modern agriculture in America
A graphic summary of American agriculture, based largely on the census of 1920
An historical sketch of the Iowa State College of Agriculture and Mechanic Arts
New farm and forest products : responses to the challenges and opportunities facing American agriculture
Extension course in vegetable foods for self-instructed classes in movable schools of agriculture
The States' role in the cooperative state-federal research system for agriculture and forestry
Relation of the United States Department of agriculture to the agricultural colleges and experiment stations
